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Effects of propyl gallate on adhesion of polymorphonuclear leukocytes to human endothelial cells induced by tumor necrosis factor alpha.

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OBJECTIVE To investigate the effects of Propyl Gallate (PrG) on cellular adhesion between human To investigate the effects of Propyl Gallate (PrG) on cellular adhesion between human umbilical vein endothelial cells (HUVEC) and polymorphonuclear leukocytes (PMN) as well as the expression umbilical

Propyl gallate sensitizes human lung cancer cells to cisplatin-induced apoptosis by targeting heme oxygenase-1 for TRC8-mediated degradation.

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Heme oxygenase-1 (HO-1) significantly contributes to survival of cancer cells and is being considered as one of therapeutic targets for cancer treatment. Propyl gallate (PG) is a synthetic phenolic compound that possess a potent anti-oxidant and anti-inflammatory activities. In the present study, we

Comparative cytotoxicity of alkyl gallates on mouse tumor cell lines and isolated rat hepatocytes.

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Alkyl esters of gallic acid inhibited the respiration rate of mouse sarcoma 786A and mouse mammary adenocarcinoma TA3 cell lines and its multiresistant variant TA3-MTX-R more effectively than gallic acid, both in the absence and in the presence of the uncoupler CCCP. The order of inhibition of the

Metal-mediated oxidative damage to cellular and isolated DNA by gallic acid, a metabolite of antioxidant propyl gallate.

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Propyl gallate (PG), widely used as an antioxidant in foods, is carcinogenic to mice and rats. PG increased the amount of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG), a characteristic oxidative DNA lesion, in human leukemia cell line HL-60, but not in HP100, which is hydrogen peroxide

Modification of carcinogenesis by alpha-tocopherol, t-butylhydroquinone, propyl gallate and butylated hydroxytoluene in a rat multi-organ carcinogenesis model.

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Effects of the dietary antioxidants alpha-tocopherol (alpha-Toc), t-butylhydroquinone (TBHQ), propyl gallate (PG) and butylated hydroxytoluene (BHT) were examined using a multi-organ carcinogenesis model. Groups of 20 F344 male rats were treated with a single intragastric administration of 100 mg/kg

Aberrant crypts as a biomarker for colon cancer: evaluation of potential chemopreventive agents in the rat.

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We assessed the effects of 41 potential chemopreventive agents in the F344 rat using the inhibition of carcinogen-induced aberrant crypt foci (ACF) in the colon as the measure of efficacy. ACF were induced by the carcinogen azoxymethane in F344 rats by two sequential weekly injections at a dose of

No evidence of carcinogenicity of D-mannitol and propyl gallate in F344 rats or B6C3F1 mice.

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Chronic toxicity and carcinogenicity studies were conducted on D-mannitol and propyl gallate in F344 rats and B6C3F1 mice. Groups of 50 rats and 50 mice of each sex were maintained on diets containing either 0, 2.5 or 5.0% D-mannitol or 0, 0.6 or 1.2% propyl gallate for 103 wk. D-Mannitol had no

Role of reactive oxygen in tumor promotion: implication of superoxide anion in promotion of neoplastic transformation in JB-6 cells by TPA.

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The role of reactive oxygen (RO) in the promotion of neoplastic transformation of JB6 mouse epidermal cells by 12-O-tetradecanoylphorbol-13-acetate (TPA) was investigated using inhibitors of RO itself or RO generating systems of seven different types. Bovine erythrocyte CuZn superoxide dismutase

Hydrolyzable tannins: potent inhibitors of hydroperoxide production and tumor promotion in mouse skin treated with 12-O-tetradecanoylphorbol-13-acetate in vivo.

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The anti-oxidant and the anti-tumor-promotion activities of several hydrolyzable tannins (HTs), including a commercial tannic-acid (TA) mixture, were examined in mouse skin treated with 12-O-tetradecanoylphorbol-13-acetate (TPA) in vivo. A single application of TPA gradually increases the

Butylated hydroxyanisole blocks the inhibitory effects of tumor necrosis factor-alpha on collagen production in human dermal fibroblasts.

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Tumor necrosis factor-alpha (TNF-alpha) has been demonstrated to selectively decrease the production of type I and type III collagens in human dermal fibroblasts. The effects of the commonly used food antioxidants, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol,

Enhanced cytotoxicity of mitomycin C in human tumour cells with inducers of DT-diaphorase.

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DT-diaphorase is a two-electron reducing enzyme that activates the bioreductive anti-tumour agent, mitomycin C (MMC). Cell lines having elevated levels of DT-diaphorase are generally more sensitive to MMC. We have shown that DT-diaphorase can be induced in human tumour cells by a number of

Propyl gallate inhibits the growth of HeLa cells via regulating intracellular GSH level.

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Propyl gallate (PG) as a synthetic antioxidant exerts a variety of effects on tissue and cells. Here, we investigated an involvement of glutathione (GSH) and reactive oxygen species (ROS) in PG-induced inhibition of HeLa cell growth. PG dose-dependently inhibited HeLa cell growth and induced

A novel compound modified from tanshinone inhibits tumor growth in vivo via activation of the intrinsic apoptotic pathway.

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A novel compound, acetyltanshinone IIA (ATA) was obtained from chemical modifications of tanshinone TIIA (TIIA) isolated from a medicinal plant, Salvia miltiorrhiza. ATA exhibited increased water solubility and stronger apoptotic activity on multiple cancer cell lines than TIIA. ATA displayed a

Role of redox signaling regulation in propyl gallate-induced apoptosis of human leukemia cells.

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Propyl gallate (PG) is a synthetic antioxidant that has been used in processed food and medicinal preparations. The anti-cancer effect of PG in leukemia is unclear. In the present study, we demonstrate that PG reduced cell viability in THP-1, Jurkat, and HL-60 leukemia cells and induced apoptosis in

Propyl gallate inhibits hepatocellular carcinoma cell growth through the induction of ROS and the activation of autophagy.

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The poor prognosis of hepatocellular carcinoma (HCC) has been attributed to a high frequency of tumor metastasis and recurrence even after successful surgical resection. With less than 30% of patients benefiting from curative treatment, alternative treatment regimens for patients with advanced HCC

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